baomidou/dynamic-datasource
Dynamic Datasource
本项目是一个专为 Spring Boot 设计的动态数据源管理器，用于处理多个数据库连接并在运行时进行切换。它提供了一个用于管理数据库读写分离、协调跨不同数据库的分布式事务，以及在无需重启应用的情况下更新连接设置的系统。
该框架通过其根据用户会话或请求头路由流量以支持多租户架构的能力脱颖而出。它还包含一种在配置文件中加密敏感数据库凭据的机制，以防止明文泄露。
其能力范围扩展至数据库连接路由、主从节点间的读写分离，以及用于减少启动时间的懒连接初始化。它进一步通过集中式事务控制管理数据一致性，并支持运行时添加或移除数据库连接配置。
Features
- Spring Boot Database Access - Provides a framework for Spring Boot that handles multiple database connections and switches between them at runtime.
- Runtime Connection Configuration - Enables adding or modifying database connection settings without requiring an application restart.
- Request Routing - Directs requests to specific database groups to support read-write splitting and master-slave replication.
- Runtime Connection Management - Allows programmatically adding, removing, or switching database connection configurations while the application is running.
- Dynamic Connection Switching - Evaluates dynamic parameters from sessions or headers to swap active database connections at runtime.
- Read-Write Splitting - Routes traffic between master and slave databases to optimize performance and load balancing.
- Tenant Request Routing - Directs application requests to different databases based on user sessions or headers to support multi-tenant architectures.
- Multi-datasource Configurators - Provides a system for defining and switching between multiple named database connections within a single application.
- Read-Write Splitting - Optimizes database performance by routing read queries to slave nodes and write queries to the master node.
- Context-Aware Connection Selection - Determines the target database by retrieving routing keys from thread-local storage or request headers.
- Dynamic Proxy Routing - Wraps the data source in a proxy that delegates queries to different physical connections based on the current context.
- Connection Route Switching - Implements AOP-based interception to switch database connections dynamically based on annotations.
- Secure Database Configurations - Protects sensitive database credentials in configuration files using encryption to prevent plain text exposure.
- Lazy Connection Initialization - Delays the creation of database connections until the first request occurs to reduce startup time.
- Lazy Connection Initialization - Postpones the creation of database connection pools until the first request to reduce startup time.
- Runtime Configuration Refreshes - Updates the internal data source map and connection pools without restarting the application when configuration changes.
- Credential Encryption - Protects sensitive connection information in configuration files using built-in or custom encryption methods.
- Distributed Transaction Coordinators - Coordinates commit and rollback operations across multiple data sources by hooking into a distributed transaction coordinator.
